Ring binder



FIG. 1 is a perspective view of a first embodiment of the ring binder of the present invention;

FIG. 2 is a top plan view thereof;

FIG. 3 is a right side view thereof (the left side being identical);

FIG. 4 is an end view thereof (the other end being identical);

FIG. 5 is a perspective view of a second embodiment of the ring binder of the present invention;

FIG. 6 is a top plan view thereof;

FIG. 7 is a right side view thereof (the left side being identical);

FIG. 8 is an end view thereof (the other end being identical);

FIG. 9 is a perspective view of a third embodiment of the ring binder of the present invention;

FIG. 10 is a top plan view thereof;

FIG. 11 is a right side view thereof (the left side being identical); and,

FIG. 12 is an end view thereof (the other end being identical). 

The ornamental design for a ring binder, as shown and described. 